Find the percent of change from 15 books to 20 books.

I AM SO LOST

33.3333% increase

Step-by-step explanation:

simplify

15:20

Calculate percentage change

from V1 = 15 to V2 = 20

(V2−V1) |V1| ×100

= (20−15) |15| ×100

= 515×100

= 0.333333×100

= 33.3333%change

= 33.3333%increase

It's an increase cuz your going up and not going down a number

Hope this helped a little!

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.